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Title:
POWER STORAGE ELEMENT AND POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/195434
Kind Code:
A1
Abstract:
A power storage element according to one aspect of the present invention comprises: an electrode body in which a positive electrode having a positive electrode active material layer and a negative electrode having a negative electrode active material layer are laminated; and a sealable container for housing the electrode body. The electrode body is in a state of being pressed in a direction in which the positive electrode and the negative electrode are laminated. The differential pore volume of the positive electrode active material layer at a pore size of 50 nm is at least 0.0030 cm3/(g•nm). The difference between the open circuit voltage when the SOC is 30% and the open circuit voltage when the SOC is 70% is not more than 0.2 V.

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Inventors:
ENDO DAISUKE (JP)
Application Number:
PCT/JP2023/013750
Publication Date:
October 12, 2023
Filing Date:
April 03, 2023
Export Citation:
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Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M10/0525; H01G11/26; H01G11/32; H01G11/46; H01M4/131; H01M4/136; H01M4/485; H01M4/505; H01M4/58; H01M4/587
Domestic Patent References:
WO2017126682A12017-07-27
Foreign References:
JP2018026400A2018-02-15
JP2020167353A2020-10-08
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